^^the BBC MasterChef series was the original, and had a decade-long run from 1990-2001. This original series prompted PBS to adapt a version for USA audiences called MasterChef USA; this show aired for 2 seasons until PBS pulled the plug due to declining ratings.
In 2005, the BBC resurrected MasterChef in the UK with a revamped format and retitled it as MasterChef Goes Large. This new series became rather successful, and in 2008 they reverted the series title to the original, plain MasterChef title.
Australia made its own MasterChef series in 2009 based on the revamped BBC show, but making its own unique changes to the format. The revamped BBC series was also the basis for a MasterChef revival in the USA in 2010, this time aired on the FOX network.